Scaffolding



July 19, 1932.? M. D. AVALLONE SCAFFOLDING 2 Sheets-Sheet 2 Filed Feb. I 13, 1931 INVENTOR. #7/17750 0.4144440:

A TTORNEY provisionof'a portable window attaching Th' e' invention Patented July 19, 1932 SCAEFO DINGI Application ffiled Febriiary 13,1931. "Serial No. 515,514; v

This invention relates to window attach-' ing supports and more particularly is directed'to portable sca'fiolds adaptedto be rerno'vably installed outside a window opening of a dwelling or building to provides conveniently positioned and safe stand for cleaning windows, or ahandy storage suspension means, and for like purposes.

Among the objects of the'inventionis the scaffold of the. character described comprising few and simple parts assembled to form a light weight, collapsi-bly foldable, r-ug-ged structure, which shall be easy t'o install and remove, which shallbe safe to -useywhich shall be; cheap-to manufacture," and practical and eficient to a high degreein use. I

Other objects of. this invention" will in partbe'obvious and in part-hereinafter pointed out.-' r L V accordingly consists in the features .of construction, combinations of elements and arrangementof par-ts which will be exemplified-in the constriiction hereinafter described and of whichthe soopeiof application will be indicatedinthe following claims. i Q

In the accompanyinggdrawings, in which" is shown oneof the various ossibl illus- 0 trative embodiments of this invention,

Fig. l is a perspective view of a f'ragn-ientary portion of a building walland window showing the improved ;soa'fiold embodying the invention suspended from'the. window drip-sill and with a window cleaner supported on the platform of thescafioldji-n a convenient position for sliding the window sashes and cleaningthe panes thereof.

Figs. 2 and 3 areperspective views ofthe improved scaffold removed from the window ,in open and folded positions, respectively; Fig. l is a cross-sectional view takenon 1ines l' l in Fig. 2,and' A i Figs. 5 and 6 are perspective views of a modified construction of the improved scaffold removed from thewjindowyin folded and open positions, --respectively: Referring in detail to the drawings, 1() denotes a foldably-collapsible scaffold einbodying the invention. Said scaffold is safety,asi s clearlyrsho-wniin Figkl.

. Theends 12)..of .thebar iFigs. :and' t2.

:the other ends of s'aidxlinks "318 }being -secured adapted to be suspended from the drizpsiil .D- of a windowfra me F: provided inn-building wall 13. The platform llof said scafi'o'ld 10 1 is positioned a sufiicient distance "below. the level ofv1thesi ll-D-to permit the;..wind,0=- 1V[ cleaner G standing on the platformJl to V convenient-1y reach and .clean-thepanes LP .ofwt'he sliding sashesS'.:and.il0 @m0we said sashes with minimum exertion'and complete The scaffold 110 may comprise :aspaced parallelly aligned, rigidsinle frames 1 2, ea-oho-f'which isypreferablyiniade or ai bazi bentto form. a rectangular structure having.

a diagonally eXtending'zbraceQJlQa. "Thela'tter i:

.extends fmm outenlower corner 12bit)" 1 apart-ion 12c ofthe oppositeiframesidelwd,

said portion 120 being a short distanceidoyii fromtheiupper inner corner 126-31g, ends of eachqbar .forming :sai'd rfliame 12 may; be y secured by welding, bolts ion: by ganyxiother well known means :as "for .eirample', rivets 1.3.

The latter atpontions 120 may beuti'lizied to permanently I fasten .suitaible ...attaehmeilt smeansto extend ioutwardlgysfromi saidifmmes said means} terminatingjnhooks 1A. which are adapted tolengageiunder an interior edgb ;(;not.:shown) of the drip :sil lfiD, as israpfparent from Figs. 1 and 2. v

storming :the frame. 8 9 '12 .imay ibe outwardly extended to zoos-operate .withjthe hooks .14 "for preventing accidental displacement'of the attac'lunent; hooks-strain .the sill Diafter the scaffold 10 :is set sition: Eachnofthe :frames 12 alias 1a H V shaped member 15 secured. and-Fbracedl it!) the" frame by :means of straps 51. 6. V i$aidaneii1- rimeanslof rivets17. Said memberslfipnojfictfi .laterallyqfmm-the,..lowerssidesiofzthe frilmes 1 a ".12 andsareipositioned to extend towand each nther. {so has to formga seat gfor the p lagtf-Qnm V r 2 ing; the frames 112., her ,,.i

ll-iwhen *the scaffold .is openas lshqwin 1" For interconnect provided doublev sets of spaced lBj-flmd Y j 1 9.. The links 18 have one :end of eaoh piv spective1y,'as showninFigs. 2 and 8.. vThis together for swingingmovement, as at 21, to

w the opposite ends of a central cross-bar 22.

' The links 19 have one end of each pivoted on a mid-portion of the upright sides ofthe frame 12, asat 23. The other ends of the .links 19 are pivotally secured together, as

at 24, :to' the upper .end of a spacing'bar 25,

the latter having its-alower end pivotally secured'tothe ends of the links 18, at 21, as

is clearly shown in; Figs. 1, dande V The platform 11'isfsecured to the central cross-bar 22 by any suitable means, such as v bolts26, and swingable cross-braces, 27 and 28 may be provided for interconnecting the 'top sides of the frames 12.- Brace27 is 'piv' oted, as at 29',- to one of the frames 12, and

theother brace 28 is pivotedon the hook 14.

i of the other .framel as'fiat 30. Said braces 27 and 28. terminate in suitable clamp-engaging ends 27a and 28a, respectively.

The members 27 and'28 may be constructed 'in any: suitablemanner andas-here shown, 1

the: ends of members 27 and 28 are formed with right-angle projections by which they are pivoted to the frame at 29 vand 30, re-

projection in-the member 28 is necessary :to

clearlthe edgeof the depressed portion lof I The utility of the scaffold will now be ap-t parent. When not in use, the. parts offsaid scafiold are collapsibly folded-:as shownzin essary, toispreadthe frames 12 apart by mere- 7 7 1y swinging thel1inks1-8 and 19 011 the pivots 17, 21 and 24 until the platform llgis :seated on the members vl5. The cross braces 27. and 28 arefth'en swung so thattheiclamp: ends r 27a'and-28a, respectively, thereof eng'age on the opposite frame 12 and.hook 14-, respectively; V The hook ends 14" are then-engaged on the drip sill sD with the scaffold.-10.posi-' itionedvag'ainst the wall on theexterior side of-the building 13-; as is clearly shown in Fig.-

In' this. position, 1a window 'cleaner' C standing on the platform -lla-is situated at a convenientheight to slide {the window j sashes np and downwith theleastefl'ort and [t0 reach al'l the window panes P with'fease andsafety'.

-'-In:Figs. '5 and 16, amodified constructionof therimprov ed? invention 1 is shown. Here -scafi'old l ldis formed ofparts whichlare of otherwise fastened to the frontand simpler construction and consequently pro- I vide a lighter and more compact device than 'thatdesoribed'above and shown in Figs. 1

and2. Said scafiold 110 is seen to comprise a pair of spaced parallelly-aligne'd rigid side frames 112 eachhaving a diagonally extending brace 112a.. Theoppositeends112b of said brace are'bentround and. riveted for of the frames 112; e

I Thehooks114 in this modified construction are provided with suitable extensibly adj uste able ends 114a so that the scaffolding llOmay be fitted todrip sills of various widths.

7 ,Each of the frames 1'12 has a U -shaped memberv 115. projecting-laterally from the lower sides of the frames 112, said members being positioned to extendtowards each other rear side so as to, forma seat for they platform lll when the. scaffold is open as shown in Fig. 6. Unlike the construction of the; scaifoldilO described above, the member 115 is incorporatedto serveas a'brace for'interconnecting i the lower ends of the frames 112.- r

The upper sides 1120,0f the frames 112-are bowed-outwardly and extend fa'substantial 7 distance .abovethe level ofthe hooks 114' to provide higher side walls for the scaffolding.

The outer sideofsaidjframes112adjacent the upperoside 1120 maybe providedwitha hinged brace 127 which ;,is downwardly col p bl o I I The side i unlilreif f mes z fi .the' scaffold 10;mayf be provided with-cross- 5 bars 112d. extending laterally. ust; above the diagonal braces 112a, and; like said'jsca fiold 1 10, frames 112 are interconnectedbyadouble '1 1 setof spaced'ilinkslIS and-119.; The links- 118 havingflone endflof eachypivoted tothe member 115,;asati120'. -.The;ot h er endsofa 5 ioo b said link 18 aresecured togetherfor swinging movement, as at 121, to afastening angle l22 extending 'from platform 111;? The links 7 119 haveone end ofeachsecured tot-hemid-j portion; of the upright: side: of the frames ,112, as at 123.. The other ends of thelinlg119 "are pivotallyflsecuredtogether, as at 12 1, to

the upper endofaspacing bar 125, the latter having itsjlower, end pivotall'y secured to the I endsof the 1inks118, at 121, as is clearly shown in Figs. 5 and 6.} -Preferably, the-rear 1 upright bar islonger; than the front bar: 7 so as to bringthe rear links119in alignment '7 I with the cross-bars 112mm hooks 114.; This r construction eliminates" the necessity of. proite viding an extra hinged brace on'the rear. side of the scaffold The platform 11.1 is secured tothe fastening angles 122 suitable means, such as bolts 126'.

' .The, scafiold 110%.Whn znotingu'se, has the parts thereofcollapsibly folded asshown in Fig; 5, and is retained in said folded position by a suitable latch 130. The 1inks 118and 119" are then swungupwardlyon the hinges 120,121, 123 land, 12 1 so that the platform 111 is in tilted position, the brace bar 127 being swung downwardly. Thus the scaffold 110, like scaffold 10, is folded into a very compact body for storage or transportation.

Scaffold 110 is readily unfolded and suspended from a drip sill upon a window opening, the hooked ends 114a being first adjusted to fit the width of the drip sill. When the V scaffold 110 is positioned against the wall of the exterior side of the building and suspended from a window opening, the window cleaner standing on the platform 11' is situated at a convenient height to slide the window sashes up and down with the least effort and to reach all the window panes with ease and safety as is apparent from Fig. 1.

From the above description-and drawings, it is seen that the scaffolds 10 and 110 although made of relatively lightweight material form exceptionally strong, rugged, and braced structures which are capable of with-. standing the roughest use.

The scaffolds 10 and 110 may also be utilized as handy storage means, as for ex ample as supports for boxes plants or other receptacles. V

It will thus be seen that there isprovided scaffolds in which the several objects of this invention are achieved and which are well adapted to meet the conditions of practical use. a

As various possible embodiments might be made of the above invention, andasvarious changes might be made in the embodiments above set forth, it is to be understood'that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent: j

a 1. A window scaffold of the characterdescribed comprising a pair of spaced frames, means interconnecting said frames for col-- lapsibly folding said scaffold whennot in use, window sill engaging means extending from said frames, a platform and pivotal conneccollapsibly folding said scaffold when not in use, window sill engaging hooks extending from said frames, a platform pivotally mounted on said links for swinging movement between said frames, and means on saidframes for supporting opposite ends of said I platform.

4. A window scaffold of thecharacter described comprising a pair of spaced end frames, front and back sides consisting of'sets of spaced links interconnectin said frames for collapsibly folding said scahold when not in use, window sill engaging hooks extending from said frames, and a platform demountably supported on said frames, said platform and links being pivoted together for swinging movement on foldably collapsing said use,,window sill engaginghooks extending jfrom said frames, said hooks having extensis ble ends adapted to be adjusted for various widths of sills, and a platform pivotally connectedto said links for swinging movement between said frames. j

In testimony whereof I aflix my signature.

" 'MATTEO D. AVALLONE. 

